149 lines
4.7 KiB
Go
149 lines
4.7 KiB
Go
package crisis
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import (
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"context"
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"encoding/json"
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"fmt"
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"github.com/spf13/cobra"
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"google.golang.org/grpc"
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"cosmossdk.io/core/appmodule"
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"cosmossdk.io/core/registry"
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"github.com/cosmos/cosmos-sdk/codec"
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"github.com/cosmos/cosmos-sdk/types/module"
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"github.com/cosmos/cosmos-sdk/x/crisis/keeper"
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"github.com/cosmos/cosmos-sdk/x/crisis/types"
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)
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// ConsensusVersion defines the current x/crisis module consensus version.
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const ConsensusVersion = 2
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var (
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_ module.HasName = AppModule{}
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_ module.HasAminoCodec = AppModule{}
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_ appmodule.AppModule = AppModule{}
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_ appmodule.HasEndBlocker = AppModule{}
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_ appmodule.HasServices = AppModule{}
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_ appmodule.HasMigrations = AppModule{}
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_ appmodule.HasRegisterInterfaces = AppModule{}
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_ appmodule.HasGenesis = AppModule{}
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)
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// Module init related flags
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const FlagSkipGenesisInvariants = "x-crisis-skip-assert-invariants"
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// AppModule implements an application module for the crisis module.
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type AppModule struct {
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// NOTE: We store a reference to the keeper here so that after a module
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// manager is created, the invariants can be properly registered and
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// executed.
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keeper *keeper.Keeper
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cdc codec.Codec
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skipGenesisInvariants bool
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}
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// NewAppModule creates a new AppModule object. If initChainAssertInvariants is set,
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// we will call keeper.AssertInvariants during InitGenesis (it may take a significant time)
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// - which doesn't impact the chain security unless 66+% of validators have a wrongly
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// modified genesis file.
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func NewAppModule(keeper *keeper.Keeper, cdc codec.Codec, skipGenesisInvariants bool) AppModule {
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return AppModule{
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keeper: keeper,
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skipGenesisInvariants: skipGenesisInvariants,
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cdc: cdc,
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}
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}
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// IsAppModule implements the appmodule.AppModule interface.
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func (am AppModule) IsAppModule() {}
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// Name returns the crisis module's name.
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func (AppModule) Name() string {
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return types.ModuleName
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}
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// RegisterLegacyAminoCodec registers the crisis module's types on the given LegacyAmino codec.
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func (AppModule) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
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types.RegisterLegacyAminoCodec(cdc)
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}
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// RegisterInterfaces registers interfaces and implementations of the crisis
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// module.
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func (AppModule) RegisterInterfaces(registrar registry.InterfaceRegistrar) {
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types.RegisterInterfaces(registrar)
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}
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// AddModuleInitFlags implements servertypes.ModuleInitFlags interface.
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func AddModuleInitFlags(startCmd *cobra.Command) {
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startCmd.Flags().Bool(FlagSkipGenesisInvariants, false, "Skip x/crisis invariants check on startup")
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}
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// RegisterServices registers module services.
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func (am AppModule) RegisterServices(registrar grpc.ServiceRegistrar) error {
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types.RegisterMsgServer(registrar, am.keeper)
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return nil
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}
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// RegisterMigrations registers the crisis module migrations.
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func (am AppModule) RegisterMigrations(mr appmodule.MigrationRegistrar) error {
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m := keeper.NewMigrator(am.keeper)
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if err := mr.Register(types.ModuleName, 1, m.Migrate1to2); err != nil {
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return fmt.Errorf("failed to migrate x/%s from version 1 to 2: %w", types.ModuleName, err)
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}
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return nil
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}
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// DefaultGenesis returns default genesis state as raw bytes for the crisis module.
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func (am AppModule) DefaultGenesis() json.RawMessage {
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return am.cdc.MustMarshalJSON(types.DefaultGenesisState())
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}
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// ValidateGenesis performs genesis state validation for the crisis module.
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func (am AppModule) ValidateGenesis(bz json.RawMessage) error {
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var data types.GenesisState
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if err := am.cdc.UnmarshalJSON(bz, &data); err != nil {
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return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
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}
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return types.ValidateGenesis(&data)
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}
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// InitGenesis performs genesis initialization for the crisis module.
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func (am AppModule) InitGenesis(ctx context.Context, data json.RawMessage) error {
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var genesisState types.GenesisState
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if err := am.cdc.UnmarshalJSON(data, &genesisState); err != nil {
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return err
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}
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am.keeper.InitGenesis(ctx, &genesisState)
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if !am.skipGenesisInvariants {
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am.keeper.AssertInvariants(ctx)
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}
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return nil
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}
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// ExportGenesis returns the exported genesis state as raw bytes for the crisis module.
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func (am AppModule) ExportGenesis(ctx context.Context) (json.RawMessage, error) {
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gs, err := am.keeper.ExportGenesis(ctx)
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if err != nil {
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return nil, err
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}
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return am.cdc.MarshalJSON(gs)
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}
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// ConsensusVersion implements HasConsensusVersion
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func (AppModule) ConsensusVersion() uint64 { return ConsensusVersion }
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// EndBlock returns the end blocker for the crisis module. It returns no validator
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// updates.
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func (am AppModule) EndBlock(ctx context.Context) error {
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EndBlocker(ctx, *am.keeper)
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return nil
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}
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